There are many pods in cowpea flowers

As the temperature rises, cowpea growth accelerates. After multiple toppings and pruning, the cowpea plant grows vigorously with many internodes and enters the flowering and pod-forming stage. The first flower of cowpea has a large number of flowering flowers and concentrated nutritional needs. The most important thing in this period is to supplement the nutrients to ensure normal flower bud differentiation, promote pod expansion, and increase early yield, and prepare for the next flowering to avoid plants. Severe overdraw affects flower bud differentiation.

1. Pruning and sparse leaves, improving ventilation and light transmission

When the planting density is high in the field, pruning and leaf extraction are essential. Ensure that the leaves of the plant are staggered to increase ventilation and light transmission. If the inner part of the leaf sees less light, it is necessary to properly thin out the inner leaves. The overly dense leaves must also be thinned out properly. You can remove 1-2 leaves on each petiole to ensure that the light is more balanced up and down the plant. In this way, it can ensure that the nutritional supply of the upper and lower plants is balanced and sufficient, and each part of the cowpea can quickly pod after flowering to avoid the problem of falling flowers and pods.

2. Pay attention to nourishing and promoting roots

Cowpea blossoms and pods have a large nutritional requirement. Reasonable topdressing can ensure that the plant is adequately nutritious, promote fruit expansion, and increase yield. Unlike solanaceous fruits and melons, the nutritional requirements of legumes are generally the most nitrogenous, followed by potassium and calcium. When topdressing, pay attention to choosing balanced water-soluble fertilizers instead of high-potassium fertilizers, so as not to cause excessive potassium fertilizers, the early expansion of soybean kernels, and affecting the quality of cowpeas. In addition, pay attention to the supplementation of calcium fertilizer. In the past, vegetable farmers only focused on nitrogen, phosphorus, and potassium fertilizers, and insufficient attention to calcium fertilizers, but cowpeas were more sensitive to calcium fertilizers. Calcium deficiency easily led to poor differentiation of cowpea flower buds. , The pods are short, the tips are small, the kernels are not full and the lack of seeds is prominent, the yield is low, and the quality is poor.

Therefore, pay attention to choosing the type of nitrogen and potassium fertilizer balance when topdressing. Use 10-15 kg per mu, with 1 liter of suspended calcium in Ishihara Taurus, and 30-50 kg of home-made biological fungus fertilizer. Topdressing during the pod-setting period, nutrient fertilizer and biological bacterial fertilizer should be reasonably matched and indispensable. Focus on supplementing nitrogen, potassium and calcium fertilizers, balanced nutrition, promote flowering and pod formation, and improve yield and quality. At the same time, with biological bacterial fertilizer, it can activate and improve the soil, inhibit the propagation of pathogenic bacteria, improve the activity of the root system, prevent disease and raise roots, and ensure that the nutrient supply is sufficient and durable.

3. Reasonable foliar topdressing

Plants in the flowering and pod-setting stages have great nutritional requirements, and some trace elements can be supplemented through foliage, which has a fast onset and good effect. Before flowering cowpea, in order to ensure the quality of flowering, spray melamine monosilic acid 1000 times, boron fertilizer 1000 times, molybdenum fertilizer 1500 times, alginic acid 800 times, etc. in advance when seeing buds, to supplement trace elements and improve plant nutritional status Promote flower bud differentiation and improve flowering quality.

During the pod swell period, in order to ensure the pod swell and the second flower bud differentiation, you can spray suspended calcium 1000 times, boron fertilizer 1000 times, Bacillus subtilis 500 times, Trichoderma harzianum 500 times, and chitosan 500 times. The number of beneficial bacteria, improve leaf resistance, prevent disease, and prevent premature leaf senescence.

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